Knob attachment



(Mode1.)

J. SOHAD-B.

.KNOB ATTACHMENT.

No. 407.902. Patented July 30,1889.

q vi/bnewe/a 5 UNITED STATES EATENT FFICE.

JOHN SOHADE, OF BROOKLYN, NEW YORK, ASSIGNOR TO THE HOPKINS & DICKINSON MANUFACTURING COMPANY, OF NEWV YORK.

KNOB ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 407,902, dated July 30, 1889.

Application filed July 9,1888. Serial No. 279,356. (Model) To all whom it may concern.-

Be it known that I, JOHN SCHADE, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Door-Knobs and Attachments; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others to skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of this invention is to secure a more perfect fastening to the spindle, and

adjustment of a knob tot-he door and roseplate arranged thereon, so that the said knob is given a more firm and steady bearing, and

is thereby prevented from rattling and being otherwise rendered objectionable.

A further object is to secure the said results at a reduced cost of construction and to provide a neater and more presentable ar- 2 5 rangement of parts and workmanship.

The invention consists in the arrangement and combination of parts, substantially as will be hereinafter set forth, and finally en1-' bodied in the claims.

Referring to the accompanying drawings, in which like letters of reference indicate corresponding parts in each of the figures, Figure 1 is a side elevation of my improved device; Fig. 2 is a sect-ion taken centrally through the spindle-knob and co-opcratin g parts; and Fig. 3 is a section on line 00, Fig. 2. Fig. dis a plan view of the rear of the roseplate, showing the recesses or grooves. Fig. 5 is a plan view of the under side of the knob and showing the lugs on the end of the sleeve. Fig. (5 is an elevation of the sleeve, showing one of the lugs on the outward end.

In said drawings, a indicates a knob, and Z) the ordinary shank thereof, having the usual 5 square or angular opening or socket a to receive the corresponding]y-formed spindle 1), connecting said knob a with the opposite knob a, the said shank Z) being cast integral with the knob to or being secured thereon in any suitable manner.

Upon the outside of the shank b, which is preferably round, are formed grooves or recesses c, and over the said shank is arranged a revolving sleeve (Z, the said sleeve being iirrnlysecured upon the said shank by having projections, pins, or ridges 0, formed in any suitable manner, which extend from the inner side of the sleeve into the said grooves of the shank, so as to hold the said sleeve from Withdrawal. I prefer, however, that the said inward projections shall be formed by spinning, by means of a lat-he and suitable tools, in any ordinary manner. The sleeve (1 is thus permanently attached to the shank, being allowed to revolve thereon without chance of separation. The sleeve extends through to the outside of the rose-plate, entirely covering the knob-shank, and engages the posterior side of the knob. The said sleeve projects backward from the shank of the said knob, as shown in Fig. 2, and 011 the part thus projecting is formed female threads (1, adapted to engage with the threaded spindle b. The spindle is made square in the ordinary manner, but the corners or edges of the same, designed to enter the sleeve, have threads cut in them, as shown at W, Fig. 1. By the construction described,

when the threaded spindle is inserted in the sleeve, by turning on the sleeve the said spindle is drawn into the angular aperture, opening, or socket a within the shank Z). Thus when the knob is in place on the door the sleeve, with the knob, is drawn up toward the rose-plate, as will be understood. 8 5

Upon the end of the sleeve (1 are formed lugs f, adapted to engage corresponding recesses in the revolving rose-plate e. Said rose-plate is suitably arranged in bearings in the escutcheon-plate 9', so as to be prevented from withdrawing, and yet so as to be allowed to move pivotally therein.

Under some conditions, when the knob a has been drawn up to the door as near as convenient, but not closely, and I desire to 5 bring up the knob into more intimate relation with the escutcheon, so as to prevent any loosening or to prevent the knob from unscrewing by constant jarring or use, I have provided in connection with the escutcheonplate g a rose-plate e, which is arranged so as to revolve in the escutcheon, the said roseplate being provided with a finger-piece or P burr e, by means of which the said rose-plate may be turned with the fingers very easily. The said rose-plate is provided with a passage for the sleeve (1, and on the inside is provided with recesses h, adapted to receive the lugs f on the said sleeve. After screwing the threaded spindle I) through the sleeve and into the knob a as far as convenient I then draw on the opposite knob a, causing the said spindle to draw the lugs f of the sleeve d into the recess h, so that the said rose-plate and sleeve will be caused to turn together. The said rose-plate is then turned by the finger-piece, thus causing the two knobs to be brought into intimate relation with the door or escutcheon. The said roseplate projects slightly from or beyond the inner face of the escutcheon, as indicated in Fig. 2,and by this means, when the knobs are brought into close contact with the door, the said projection on the rose-plate is then brought into frictional contact with the door,

- and thus the said rose-plate is prevented from working in a reverse direction and the parts are held firmly in place, notwithstanding the fact that the knobs and spindles are allowed to move laterally in operating the lock.

Having thus described the invention, what I claim as new is- 'to said escutcheon, and provided with aburr e, substantially as and for the purposes set forth.

3. In combination with a knob, a threaded spindle and sleeve, an escutcheon-plate and pivoted rose-plate projecting through said escutcheon, and providing frictional bearings, substantially as and for the purposes set forth.

In testimony that I claim the foregoing, I have hereunto set my hand this 30th day of June, 1888.

JOHN SCHADE.

\Vitn esses:

CHARLES H. PELL, C. H. BALDWIN. 

